Perforating-type and overlay



(No Model.)

J. MAYERHOFF. 2 sheets-Sheet 1- PERFORATING TYPE AND OVERLAY.

No. 339,798. Patented Apr. 13, 1886.

WITNESSES IN VENTOR ATTORNEYS.

N. PETERS. Phoio-Lmpgraphcn Wzshinmon. n c.

2 SheetSSheet 2- (No Model.)

J. MAYERHOFP.

PERPORATING TYPE AND OVERLAY.

Patented Apr. 13

WITNESSES ATTORNEYS.

N. PETERS, Phutoumv m hur, Washinglon, D C.

UNITED STATES PATENT OFFICE.

JULIUS MAYERHOFF, OF CARTHAGE, MISSOURI PERFORATlNG-TYPE AND OVERLAY.

SPECIFICATION forming part of Letters Patent No. 339,798, dated April 13, 1886.

Application filed May 25, 1885. Serial No. 166,590. (No model.)

To all whom it may concern:

Be it known that I, J ULIUs 1\/IAYERHOFF,- of Carthage, in the county of Jasper and State of Missouri, have invented a new and Improved Perforating-Type and Overlay, of which the following is a full, clear, and exact description.

My invention relates to improvements n1 perforating steel type and overlays for the same in which a series of tubular perforatingtype slightly shorter than ordinary type operates in conjunction with the chase and tympan of a printingmess and type held in said chase, and with an overlay on the face of said tympan projecting from the same to afford a cutting-surface for the perforating-type.

The object of my invention is to provide a device which, while much cheaper than others now in use, produces at the same time a perfotion much sharper and neater than can otherwise be attained, and by the use of the overlay in conjunction with the perforating-type to avoid cutting and injuring the rollers.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is an isometric projection of my improved perforating steel type. Fig. 2 is a vertical cross-section of the same. Fig. 3is a horizontal cross-section of the same. Fig.4shows an elevation of several type formed in asingle piece. Fig. 5 is a perspective view of the chase and tympan of a printing-press, showing, respectively, a row of perforating-type locked in position with the printing-type and the soft-lead overlay placed to engage the same during the operation of printing and perforating.

A indicates a steel perforating-type equal in size to the Nonpareil capital letter M, or a trifle shorter. It is made either in single type, as shown in Fig. 1, or in sets of any desired number, as shown in Fig. 4. The latter form will be found more convenient where lines of any length are to be perforated.

By making the faces of the perforating-type flush with the rest of the form the inking-rollers will pass over them without obstruction or injury. 7 This is a great advantage over the use of perforating-rules, which project above the face of the form, and consequently tear and injure the roller composition.

By making the perforatingtype slightly shorter than the ordinary type, and by making the overlay project correspondingly beyond the face of the tympan, the further advantage of avoiding both roller and ink is gained.

The typeAis formed with a tapering bore, B, which increases from the face of the typeb toward its base b. By this construction the little pieces of paper out out by the perforating-type pass down the bore 13, and no clogging is possible.

When several hundred impressions have been made, it will be necessary to raise the form I I the bed of the press and remove the lated pieces. This operation is repeated as ten as the type become filled. A ip of soft lead, 0, as shown in Fig. 5, ched to the tympan or cylinder of a l fi ng-press in such position as to meet the f the perforating-type A when the press rking, by which a clean sharp perforation 18 tained, whether the type A be flush with the urrounding type or slightly shorter than the amc. By this construction printing and P orating are accomplished by one and the e operation.

The perforation may of course be made of any desired shape or size.

\Vith slight modification the type may be used in any perforating-machine.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination, with the chase and tympan of a printing-press and type held in said chase, of a series of tubular perforatingtype slightly shorter than the said printing-type and an overlay on the face of said tympan and projecting from the same to afford a cutting surface for the perforating-type, substantially as shown and described.

JULIUS MAYERHOFF.

Witnesses:

THOMAS L. ZOOK, WM. A. SLOANE. 

